(2007). Environmental monitoring and reporting by enterprises. UN.
استشهاد بنمط شيكاغوEnvironmental Monitoring and Reporting by Enterprises. UN, 2007.
MLA استشهادEnvironmental Monitoring and Reporting by Enterprises. UN, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.